Improvement in car brakes and starters



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J. W. MOORE & J. A. SVEDBERG. CAR BRAKES AND STARTERS.

Np 185,343, Patented Dac.12,1878.

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JOHN W. MOORE AND JOHN A. SVEDBERG, OF WASHINGTON, D. O.

IMPROVEMENT IN CAR BRAKES AND STARTERS.

Specification forming part of Letters Patent No. 185,343, dated December12, 1876; application filed September 28, 1876.

To all whom it may concern:

Be it known that we, JOHN W. MOORE and JOHN A. SVEDBERG, of Washington,District of Columbia, have invented certain new and useful Improvementsin Car Starters and Brakes; and we do hereby declare that the followingis a full, clear, and exact description thereof, which will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

The object of this invention is to produce a simple and efficientmechanism for stopping a street-car, and for storing up the powerrequired in stopping for use again in starting the car.

S is the axle of the car. The wheels b and b are hung loosely on thisaxle. The hubbed wheels a and a are attached to the shaft by means of afeather, so as to revolve with it, but are loose, so that they can bemoved in line with the axle by means of the forked lever or clutchyokell. The peripheries of a and a are conical, and, when in contact with asimilar angleface on the inside of the wheels I) and 1), form a conicalfriction-clutch, which causes all the wheels to revolve together.Between the wheels I) and b a spring is coiled around the axle, one endof which is attached to each wheel. These wheels have on theircircumferences an annular groove, in which is placed the bands d and d,which, in connection with the lever 6, forms a band-brake, operated bypressure upon the foot-plate and spindle is.

Fig. 4 shows this brake arrangement alone, the fulcrum of the leverplaced on a horizontal line with the axle, and having a spiral spring,1), whose oflice it is to take the weight of the band off the wheel whennot in use.

,The clutch-yokes l and l are operated through the medium of the arm 9,shaft t', and threaded spindle 0, or any equivalent device, the

at and b are brought into contact and 1) commences to revolve. The footof the operatoris placed upon the plate k, which holds the wheel I)fixed and connects it with the body of the car. As the end of the spring0 is fastened to the revolving wheel I), and the other end to the fixedwheel b, it follows that the spring will be wound up till it stops thecar. The operator then places his other foot on the plate It, tighteningthe band d, and thus holding the wheel I) firmly. He then turns thehandle h in adirection opposite to that by which he connected thecone-friction a 1) till these wheels are disconnected and a and b areconnected. The car in this position is ready to start, and upon thesignal to do so the pressure is removed from the foot-pad 7c, and thewhole force of the spring accumulated in stopping the car is now exertedin assisting its forward movement. When the car has started and thespring unwound, the operator removes his foot from the button 70, and,disconnecting a and b, connects a and b, and is again ready to stop.

When it is desired simply to check the car, the cone-friction a. b beingconnected and ready at any moment to stop, the driver places his footupon the button It and presses with greater or less weight, as he wishesto check the speed more or less; or, should he wish to check or stop thecar without operating the spring, (and accumulating the force,) theconefriction to I) being connected, he can, with his foot, press downupon is, bringing the bandfriction d in operation directly on thesurface of b. This is' more clearly represented in Figs. 3 and 4, wherethe cone-friction is dispensed with and the band-brake alonerepresented.

Should the car have reached the end of its route, and it be desiredtostart the car in the opposite direction to that in which it wasrunning before, the cone-friction a b being connected, and the spring 0wound up by placing the foot on button It, the button It is alsopressed, (to prevent the car from starting back,) and the cone-frictiona b allowed to remain in connection till such time as required to startthe car in the backward direction, when the foot, or pressure, is takenfrom k, and the car moves in the direction from which ters Patent, is

it came. The cone-friction ab and baud-friction d are then used to stopthe car, (from the other platform.) instead of the cone tt' b nnl bendd, as in the former cases.

Having thus described our invention, what we claim as new, and desire tosecure by Let- 1. In a ear-starter, the cone-friction a, b, a beingattached to the axle by means of one or more feathers, so as to revolvewith the axle and move in line therewith, and I) being loose upon theaxle.

2. In a car'starter, the combination of the cone-friction, substantiallyas described, with the band-brake d, operated by the lever e and rod andbutton 70.

3. In a ear-starter, the combination of the JNO. W MOORE.

JOHN A. SVEDBERG. Witnesses:

A. G. HEYLMAN, J. TYLER POWELL.

